Sökning: "Phase sensitive amplifier"
Visar resultat 1 - 5 av 16 avhandlingar innehållade orden Phase sensitive amplifier.
1. Phase-sensitive amplifiers for nonlinearity impairment mitigation in optical fiber transmission links
Sammanfattning : The fundamental limitations in fiber-optic communication are caused by optical amplifier noise and the nonlinear response of the optical fibers. The quantum-limited noise figure of erbium-doped fiber amplifiers (EDFAs) or any phase-insensitive amplifier is 3 dB. LÄS MER
2. Phase Sensitive Amplifiers for Free-Space Optical Communications
Sammanfattning : The demand for high data rate free-space communications is increasing due to the planned future space exploration missions. In the next few years there is a need to increase the speed by 100 times according to NASA, and this necessitates that transmission systems operate at higher carrier frequencies. LÄS MER
3. Towards Practical Implementation of Phase-Sensitive Amplifier Based Transmission Systems
Sammanfattning : All commercially available optical amplifiers are so-called phase-insensitive amplifiers (PIAs) which degrade the signal-to-noise ratio (SNR) through the amplification process. This kind of amplifier has a quantum limited noise figure (NF) of 3 dB. LÄS MER
4. Characterization and Applications of Vector Phase-Sensitive Amplifiers
Sammanfattning : This work is devoted to the characterization of vector phase-sensitive amplifiers and processors. A detailed analysis of degenerate vector phase-sensitive amplifier (PSA) is performed.The gain and phase-sensitive extinction ratio are theoretically analyzed using three-wave theory. LÄS MER
5. Optical Transmission Systems Based on Phase-Sensitive Amplifiers
Sammanfattning : The capacity and reach of today's long-haul fiber optical communication systems is limited by amplifier noise and fiber nonlinearities. Conventional, phase-insensitiveamplifiers (PIAs), have a quantum limited noise figure (NF) of 3 dB at high gain, meaning that with a shot-noise limited input signal the signal-to-noise ratio (SNR)is degraded by at least 3 dB. LÄS MER